BFO92FA058

NTSB accident investigation · Cessna 177 · Lusby, MD · May 10, 1992

Accident · FatalField investigationFinal report
Date
May 10, 1992, 18:20 local (22:20 UTC)
Place
Lusby, MD
Injuries
3 fatal
Damage
Destroyed
Phase of flight
Initial climb
Aircraft
N177RDCessna 177
Weather
Visual (VMC) · Day
Status
Completed · report September 29, 1993
Report
Approved by Office Director
FAA report
19920510013989A
Case key
11724

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

A failure of the carburetor resulting in a loss of engine power.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine power(partial) - mech failure/malfTakeoff - initial climb
Fuel system,carburetor - failure,partialCause
Forced landingTakeoff - initial climb
In flight collision with terrain/waterTakeoff - initial climb

Analysis

During initial climb, the engine backfired and lost partial power, and the airplane crashed into wooded terrain about 250 ft beyond the end of the runway. The carburetor was disassembled, and all components were accounted for except the primary venturi. Two of the three legs which retains the venturi were separated, the third was completely missing. Visual examination of the remaining portions of the two separated legs revealed a melted and resolidified appearance. One leg piece was removed from the throttle body, ultrasonically cleaned in acetone, and subjected to x-ray energy dispersive spectroscopy (eds) in areas that had a fresh metal appearance. This analysis generated spectra with large zinc peaks and a much smaller peak for aluminum.

Aircraft

Registration
N177RD
Reported as
Cessna 177
Category
Airplane
Serial number
17700419
Airframe hours
1,950
Engine
Lycoming O-320-E2D, 150 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Personal · Part 91
Operator
Dennis Construction Inc.
Registered owner
Dennis Construction Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · March 1, 1992 · 30 hours before
Airport
MD50 · Chesapeake Ranch Airstrip, runway 31, 2,500 × 50 ft, asphalt

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
61
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
300 total · 5 in this make and model · 159 as pilot in command · 5 in the last 90 days · 5 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
6 statute miles
Lowest ceiling
8,000 ft broken
Temperature
64 °F, dew point 55 °F
Altimeter
30.00 inHg
Observed at
NHK, 15 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.